【作者】 宝力道； 包翔； 王普昶； 易津； 田晓艳； 春兰；

【Author】 BAO Lidao BAO Xiang WANG Puchang YI Jin TIAN Xiaoyan CHUN Lan(Inner Mongolia Agricultural University,Huhhot,Inner Mongolia 010019)

【机构】 内蒙古农业大学；

【摘要】 以阿尔舒特干涸湖为研究对象,对其湖床沉积物养分物质的空间分布规律进行了初步研究。结果表明,具有明显的空间分异规律。水平分布上,由湖中心向边缘全氮和全磷有减少的趋势;有机质呈先增加后减少的趋势;全钾水平分布规律不明显。垂直分布上,有机质除裸露区、湖中心区、湖西北沙化区外, 自上而下逐渐减少的趋势,湖中心区有机质分布呈"V",湖西北岸沙化区分布无明显规律;全氮含量除轻度沙化区、禾本草地和东南湿地由表层向下逐渐减少外,其它各区自上而下呈先减少后增加的趋势;全磷在湖岸交界区、原生植被区和湖东南湿地呈自上而下下降趋势,禾本草地呈先减后增的"V"型分布,西北岸沙化区、湖中心区随深度逐渐增高的趋势:全钾含量整体变化无明显规律。更多还原

【Abstract】 Spatial distribution of the soil nutrients in Aershute dry lake deposit was selected for this study.The results indicated that the horizontal and vertical distribution regulation of dry lake deposit were significant.The horizontal distributions of TN,TP had a declining trend from center to edge of lake and that of TK was not obvious. Soil organic matter increased at first and then decreased from center to edge of lake.The vertical distribution of organic matter had a declining trend with the depth increasing except bare area,central area of lake and northwestern desertification area;It had a increasing at first and then decreasing trend namely distribution of "V" in center area of lake,and it was not obvious in the northwestern desertification area of lake.TN decreased as the depth increased in mild desertification area,gramineous grassland and southeast wetlands,but it had a decreasing at first and then increasing trend in other areas.TP had a declining trend in borderline of lakeshore,primary vegetation and southeast wetlands;Its distribution regulation was named "V" in gramineous grassland,and it had increasing trend with the depth increasing in northwestern desertification area and center of lake.The vertical distribution of TK was not obvious.更多还原